tower-limit 0.3.1

Limit maximum request rate to a `Service`.
Documentation
# 0.3.1 (March 25, 2020)


- Implement `tower_load::Load` for `ConcurrentLimit` and `RateLimit`
  (#429).

# 0.3.0 (December 19, 2019)


- Update to `futures 0.3`
- Update to `tokio 0.2`

# 0.3.0-alpha.2 (September 30, 2019)


- Move to `futures-*-preview 0.3.0-alpha.19`
- Move to `pin-project 0.4`

# 0.3.0-alpha.1 (September 11, 2019)


- Move to `std::future`

# 0.1.0 (April 26, 2019)


- Initial release